using Abp.Auditing;
using Abp.Configuration;
using Abp.Domain.Repositories;
using Abp.Runtime.Caching;
using Abp.Runtime.Session;
using Abp.UI;

using Microsoft.AspNetCore.Hosting;

using VberAdmin.Authorization.Accounts.Dto;
using VberAdmin.Authorization.Users;

using VberZero;
using VberZero.AppService.Users.Dto;
using VberZero.BaseSystem.Users;
using VberZero.Folders;
using VberZero.Session;
using VberZero.Settings;
using VberZero.Tools.FileHelpers;
using VberZero.Tools.StringModel;

namespace VberAdmin.Authorization.Accounts;

public class AccountAppService : VberAdminAppServiceBase, IAccountAppService
{
    // from: http://regexlib.com/REDetails.aspx?regexp_id=1923
    public const string PasswordRegex = "(?=^.{8,}$)(?=.*\\d)(?=.*[a-z])(?=.*[A-Z])(?!.*\\s)[0-9a-zA-Z!@#$%^&*()]*$";

    private readonly UserManager _userManager;
    private readonly IVzSession _abpSession;
    private readonly UserRegistrationManager _userRegistrationManager;
    private readonly IRepository<User, long> _userRepository;
    private readonly IWebHostEnvironment _env;
    private readonly IAppFolders _appFolders;

    public AccountAppService(
        UserRegistrationManager userRegistrationManager, IRepository<User, long> userRepository, IAppFolders appFolders, IWebHostEnvironment env, ICacheManager cacheManager, UserManager userManager, IVzSession abpSession)
    {
        _userRegistrationManager = userRegistrationManager;
        _userRepository = userRepository;
        _appFolders = appFolders;
        _env = env;
        _userManager = userManager;
        _abpSession = abpSession;
        CacheManager = cacheManager;
    }

    [DisableAuditing]
    public async Task<UserProfileDto> GetUserProfile(long? userId)
    {
        var user = await CacheManager.GetCache<string, User>(VzConsts.CacheSystemUser).GetAsync(userId + "", async () => await _userRepository.FirstOrDefaultAsync(a => a.Id == userId));
        if (user == null)
        {
            CheckErrors("未查询到用户！");
            return null;
        }

        var dto = new UserProfileDto()
        {
            Id = user.Id,
            Surname = user.Surname,
            Name = user.Name,
            UserName = user.UserName,
            EmailAddress = user.EmailAddress,
            //Birthday = DateTime.Today,
            IdCard = "",
            AvatarPath = user.AvatarPath.Replace("\\", "/"),
            PhoneNumber = user.PhoneNumber,
        };

        return dto;
    }

    public async Task UpdateUserProfile(UserProfileDto input)
    {
        var user = await _userRepository.FirstOrDefaultAsync(a => a.Id == input.Id);
        if (user == null)
        {
            CheckErrors("未查询到用户！");
            return;
        }
        user.Surname = input.Surname;
        user.Name = input.Name;
        user.EmailAddress = input.EmailAddress;
        user.PhoneNumber = input.PhoneNumber;
        user.Gender = input.Gender;
        if (input.AvatarPath.NotEmpty() && input.AvatarPath.StartsWith("data:image"))
        {
            UpdateAvatar(user, input.AvatarPath);
        }
        await _userRepository.UpdateAsync(user);
        await CurrentUnitOfWork.SaveChangesAsync();
        await CacheManager.GetCache(VzConsts.CacheSystemUser)
            .SetAsync(user.Id + "", user);
    }

    private void UpdateAvatar(User user, string avatarPath)
    {
        var fileName = $"{AbpSession.UserId}@{AbpSession.GetUserName()}";
        var filePath = _appFolders.ProfileImagesFolder;
        var start = ";base64,";
        var file = avatarPath.Substring(avatarPath.IndexOf(start, StringComparison.Ordinal) + start.Length);
        var url = file.Base64ToPng(fileName, filePath, _env);
        if (url.StartsWith("error@"))
        {
            string error = url.Split(new[] { '@' }, StringSplitOptions.RemoveEmptyEntries)[1];
            throw new UserFriendlyException("修改头像", error);
        }
        user.AvatarPath = url;
    }

    public async Task ChangePassword(ChangePasswordDto input)
    {
        if (_abpSession.UserId == null)
        {
            throw new UserFriendlyException("请登录后再尝试修改密码。");
        }
        await _userManager.InitializeOptionsAsync(AbpSession.TenantId);

        var user = await _userManager.FindByIdAsync(AbpSession.GetUserId().ToString());
        if (user == null)
        {
            throw new UserFriendlyException("没有当前用户！");
        }

        if (await _userManager.CheckPasswordAsync(user, input.CurrentPassword))
        {
            CheckErrors(await _userManager.ChangePasswordAsync(user, input.NewPassword));
        }
        else
        {
            throw new UserFriendlyException("密码不正确！");
        }
    }

    public async Task<IsTenantAvailableOutput> IsTenantAvailable(IsTenantAvailableInput input)
    {
        var tenant = await TenantManager.FindByTenancyNameAsync(input.TenancyName);
        if (tenant == null)
        {
            return new IsTenantAvailableOutput(TenantAvailabilityState.NotFound);
        }

        if (!tenant.IsActive)
        {
            return new IsTenantAvailableOutput(TenantAvailabilityState.InActive);
        }

        return new IsTenantAvailableOutput(TenantAvailabilityState.Available, tenant.Id);
    }

    public async Task<RegisterOutput> Register(RegisterInput input)
    {
        var user = await _userRegistrationManager.RegisterAsync(
            input.Name,
            input.Surname,
            input.EmailAddress,
            input.UserName,
            input.Password,
            true // Assumed email address is always confirmed. Change this if you want to implement email confirmation.
        );

        var isEmailConfirmationRequiredForLogin = await SettingManager.GetSettingValueAsync<bool>(VzSettingNames.UserManagement.IsEmailConfirmationRequiredForLogin);

        return new RegisterOutput
        {
            CanLogin = user.IsActive && (user.IsEmailConfirmed || !isEmailConfirmationRequiredForLogin)
        };
    }
}